The little orphan is the central figure. There could be a mentor - like an older person who has been through similar experiences and guides the orphan. There may also be antagonists, perhaps some bullies in the orphanage or in the neighborhood who make the orphan's life difficult. And of course, there could be characters who bring hope, like a social worker who is trying to find the best solution for the orphan's future.
The main character is surely the little orphan. There could be other characters like other orphans in the same place who are friends or rivals. And there might be adults in the story, like a strict orphanage director who creates some of the challenges for the main orphan character, and a friendly neighbor who offers some help or a different perspective to the orphan.
The main character is Annie, of course. And there are likely some other characters in the orphanage like the caretakers and other orphans.
The main character is Annie. The ghosts themselves can also be considered main characters in a way. They play a big role in the story as they are the source of the spooky elements. There might also be a friendly or not - so - friendly spirit guide - like figure among the ghosts that helps or hinders Annie throughout her encounter with the ghostly world.
Obviously, Little Orphan Annie is one of the main characters.
There could be the caretaker of the orphanage. This person might seem a bit mysterious and could be involved in some of the spooky happenings, either knowingly or unknowingly.
Well, of course, Little Orphan Annie is the main character. There might also be some characters like the people in the orphanage she lives in, perhaps a kind caretaker or some other orphans. And there could be some outside characters like a rich family who helps her during Christmas or a local store owner who gives her something special.
Another character could be a villain who is hunting down any remaining Targaryens. He sees the orphan boy as a potential threat because he might grow up to claim power. This villain adds conflict and danger to the story, forcing the orphan boy and his newfound friends to constantly be on the run and develop strategies to outwit him.
We don't really know for sure without more context. But likely, the central character is the orphan. There might also be other characters such as relatives who couldn't take the orphan in, or friends the orphan made along the way. If the story is set in a particular place, there could be local community members who were either positive or negative influences on the orphan's life.
Not having read 'the orphan boy story', it's hard to say for sure. However, the orphan boy himself is the central character. There could be other orphans in the story who become his friends or rivals. There may also be an adult figure, like a teacher or a priest, who plays an important role in the boy's life, either by guiding him or by providing some form of support or challenge.
Sarah Manning is a main character. She's a con - artist who gets drawn into the clone mystery. Cosima Niehaus is another important one. She's a scientist among the clones. And Alison Hendrix, a suburban housewife clone.
Since we don't know the details of 'the dream of an orphan boy story', it's difficult to name all the main characters. However, the orphan boy is the obvious main character. There could be an antagonist as well, perhaps someone who tries to stop the boy from achieving his dream. It could be a bully in the orphanage or someone in the outside world who discriminates against him because he is an orphan. There might also be a mentor - like an old man who gives the boy advice and helps him on his path.